# Wisconsin AB458: An Act to amend 907.02 (1) of the statutes; Relating to: admissibility of expert witness testimony.

Wisconsin AB458, An Act to amend 907.02 (1) of the statutes; Relating to: admissibility of expert witness testimony., is a 2025-2026 Wisconsin Legislature (Biennial Session) House bill sponsored by Brent Jacobson (Republican), Cindi Duchow (Republican), Rob Kreibich (Republican) and 9 others; status failed, last action 2026-03-23 (Failed to pass pursuant to Senate Joint Resolution 1) (as of 2026-10-17).

- Canonical: https://policyrisk.com/state-bill/WI-AB458-2025
- As of: 2026-10-17
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Bill: Wisconsin AB458
- State: Wisconsin
- Session: 2025-2026 Wisconsin Legislature (Biennial Session)
- Title: An Act to amend 907.02 (1) of the statutes; Relating to: admissibility of expert witness testimony.
- Status: failed
- Chamber: House
- Introduced: 2025-09-26
- Last action: 2026-03-23, Failed to pass pursuant to Senate Joint Resolution 1
- Sponsors: Brent Jacobson (Republican), Cindi Duchow (Republican), Rob Kreibich (Republican), Clint Moses (Republican), David Murphy (Republican), Jeffrey Mursau (Republican), Jerry O'Connor (Republican), William Penterman (Republican), Jim Piwowarczyk (Republican), Paul Tittl (Republican), Nancy VanderMeer (Republican), Robert Wittke (Republican)
- Cosponsors: 4
- Subjects: Court -- Procedure, Witness
- Touches household money: no
- Economic provisions PRIA read: 0

## Summary

No summary available.

## Bill overview

No economic impacts identified for this bill.

## Sponsors and cosponsors

- Sponsor: Brent Jacobson (Republican), House
- Sponsor: Cindi Duchow (Republican), House
- Sponsor: Rob Kreibich (Republican), House
- Sponsor: Clint Moses (Republican), House
- Sponsor: David Murphy (Republican), House
- Sponsor: Jeffrey Mursau (Republican), House
- Sponsor: Jerry O'Connor (Republican), House
- Sponsor: William Penterman (Republican), House
- Sponsor: Jim Piwowarczyk (Republican), House
- Sponsor: Paul Tittl (Republican), House
- Sponsor: Nancy VanderMeer (Republican), House
- Sponsor: Robert Wittke (Republican), House
- Cosponsor: Dan Feyen (Republican), Senate
- Cosponsor: Howard Marklein (Republican), Senate
- Cosponsor: Van Wanggaard (Republican), Senate
- Cosponsor: Eric Wimberger (Republican), Senate

## Actions (9)

- 2026-03-23: Failed to pass pursuant to Senate Joint Resolution 1 (House)
- 2026-01-22: Laid on the table (House)
- 2026-01-20: Placed on calendar 1-22-2026 by Committee on Rules (House)
- 2026-01-14: Referred to committee on Rules (House)
- 2026-01-14: Report passage recommended by Committee on Judiciary, Ayes 8, Noes 0 (House)
- 2026-01-08: Executive action taken (House)
- 2025-11-05: Public hearing held (House)
- 2025-09-26: Read first time and referred to Committee on Judiciary (House)
- 2025-09-26: Introduced by Representatives B. Jacobson, Kreibich, Moses, Murphy, Mursau, O'Connor, Penterman, Piwowarczyk, Tittl, VanderMeer, Wittke and Duchow; cosponsored by Senators Wanggaard, Feyen, Marklein and Wimberger (House)

## Bill text

- Bill Text: [HTML](https://docs.legis.wisconsin.gov/document/proposaltext/2025/REG/AB458), [PDF](https://docs.legis.wisconsin.gov/document/proposaltext/2025/REG/AB458.pdf)

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## Sources
- [Bill Text (HTML)](https://docs.legis.wisconsin.gov/document/proposaltext/2025/REG/AB458)
- [Bill Text (PDF)](https://docs.legis.wisconsin.gov/document/proposaltext/2025/REG/AB458.pdf)

## Related
- [AB913: An Act to create 71.05 (6) (b) 57. of the statutes; Relating to: subtraction fo…](https://policyrisk.com/state-bill/WI-AB913-2025)
- [AB80: An Act to renumber 457.25 (1); to amend 46.90 (4) (ab) 4., 48.56 (2), 48.561 (2…](https://policyrisk.com/state-bill/WI-AB80-2025)
- [AB1027: An Act Relating to: requiring information relating to the food stamp program to…](https://policyrisk.com/state-bill/WI-AB1027-2025)
- [SB36: An Act to repeal 71.63 (6) (n) 1. and 71.63 (6) (n) 2.; to renumber and amend 7…](https://policyrisk.com/state-bill/WI-SB36-2025)
- [AB674: An Act to create 157.06 (15m) of the statutes; Relating to: prohibiting knowing…](https://policyrisk.com/state-bill/WI-AB674-2025)
- [SB176: An Act to create 71.05 (1) (j), 71.26 (1) (j), 71.34 (1k) (q) and 71.45 (1) (dp…](https://policyrisk.com/state-bill/WI-SB176-2025)
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Source: PRIA, https://policyrisk.com/state-bill/WI-AB458-2025 (as of 2026-10-17).